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Feeds
Average value buck converter PI tuning problems (convergence and instability)
Hi @Anh Tuan Generally, it is difficult to determine what went wrong by inspecting the block diagram alone. It is comparable to...
20 hours ago | 1
What are these blocks in Simulink and how to find?
Hi @Michelle The red block is the Zero-Order Hold block, typically used to "hold" the value of the current sampling point until...
21 hours ago | 2
Plot not displaying the y axis limits, even though "ylim" has been used.
Hi @Dharani Try something like the following: x = linspace(-1, 1, 201); y1 = 0.48*sinpi(x); y2 = -4e5*sinpi(x); figur...
21 hours ago | 0
| accepted
i want to solve a matlab question.
Original Question: a. Pick a system of your choice from the Case Studies described in Chapter 3 of the textbook (except the thr...
19 days ago | 0
addRule throws "Do not use a rule keyword as a variable name."
Hi @Michael If you prefer to use the symbolic approach (==, =>) rather than the linguistic approach (If–Then) as demonstrated b...
20 days ago | 1
need help for robotics sliding mode control execution in matlab
Hi @saravanapandian I am not familiar with your robotic research. But here is a code snippet for a simple Disturbance Observer ...
22 days ago | 1
| accepted
Bode Graph for MIMO System - Drone
Hi @Yovel Undergraduate textbooks typically say that a standard Bode plot is designed for Single-Input, Single-Output (SISO) sy...
26 days ago | 0
I want to define inputs for the function quantized_signal
Hi @Albert Not sure if this is what you are looking for. I discovered that MATLAB has a function for performing quantization. H...
26 days ago | 0
| accepted
cual es la respuesta
Hi @freddy I believe the mathematical puzzle involves the use of the factorial () operator. However, the factorial can rapidly ...
30 days ago | 0
Boost converter mathematical equation
Hi @komathy From the programmer's perspective, I can only verify the responses of the differential equations for the Boost Conv...
30 days ago | 0
Can this symbolic expression be simplified anymore?
Hi @Scott Banks As mentioned above, the general formula for n parallel-connected resistors is given by: . For two parallel-co...
1 month ago | 0
| accepted
How do I turn this Simulink model with Gain Control to Pole Placement?
Hi @farzad In all "mathematical" linear, time-invariant finite‑dimensional systems, particularly for an -th order system repres...
2 months ago | 0
Sign convention for enforcing positive definite matrix P ( 𝑃 ⪰ 𝜀 𝐼 ) using lmiterm in MATLAB LMI Toolbox (LMI)
Hi @Manish Kumar I believe I made an error in my previous comment from another thread. LMIs appear deceptively simple but can b...
2 months ago | 0
| accepted
Common Lyapunov matrix from T–S fuzzy LMI differs from published result (scaling issue?)
Hi @Manish Kumar Q1: Is the difference between the two matrices simply due to scaling / non-uniqueness of LMI feasibility solut...
2 months ago | 0
| accepted
convolution integral with ode45
In the past few days, I have been closely following the discussions on this intriguing topic of solving the integro-differential...
2 months ago | 0
Reinforcement learning to tune a PI controller
Hi @yiwei If you scroll down to the "Validate Trained Agent" section, you will observe that the RL agent returns a set of fixed...
2 months ago | 0
| accepted
getting 16 outputs instead of 4 what to do?
Hi @Divya Gorrela Your input data is likely a vector consisting of four components. In the default mode, the Gain blocks perfor...
2 months ago | 1
| accepted
PID control simulation code improvement
Hi @Cesar In addition to @Mathieu NOE's valuable contributions regarding realistic actuator saturation and overshoot reduction,...
3 months ago | 0
PID control simulation code improvement
Hi @Cesar My simulation results look almost the same as @Mathieu NOE's, but I use ode45 instead of discrete-time propagation. ...
3 months ago | 0
How so I use the Reinforcement Learning toolbox to train a Soft robot
When decided to use reinforcement learning to train a robot, it doesn't matter whether the robot is hard (rigid-body) or soft (f...
3 months ago | 0
PID controller for a car suspension system not functioning.
Hi @Bryan Shivram I am not familiar with your MIMO quarter car suspension system, but I'd advise conducting a test in MATLAB be...
3 months ago | 0
LQR Controller for Nonlinear System Tracking with Time-Varying Linearization
Hi @boutegui So you want to run ode45 in a loop like this: at the start of each time step, inject the linearized state-space mo...
3 months ago | 0
Pulling stuck vehicle with another vehicle using 1 pulley
Hi @Kristián Describing the motion of the pulley system usually requires the mathematical model, specifically the differential ...
3 months ago | 0
Prescribed time disturbance observer does not estimate in prescribed settling time.
Hi @controlEE To be honest, I have been studying the sliding mode disturbance observer over the past few days. There are still ...
3 months ago | 0
Deadbeat control Space-State System
A deadbeat control system refers to the design of a controller that enables the system to produce a response resembling a deadbe...
3 months ago | 0
Using symbolic syms inside a Simulink Function — Error: Symbolic not allowed
Hi @boutegui Before modeling the control system in Simulink, I advise that you first understand the underlying mathematical des...
3 months ago | 1
| accepted
How can i imply multiple different temperatures to my control circuit in Simulink? (+Feedforward)
Hi @Teo I'm not familiar with how your thermal system runs. However, if you have derived the mathematical model, you can constr...
3 months ago | 0
How to integrate a control system by ode45 with PID control input ?
Hi @Chuguang Pan Perhaps you can try this approach. G = tf(1, [1, 0, 0]); opt = pidtuneOptions('DesignFocus', 'disturbance-...
3 months ago | 1
| accepted
Prescribed time disturbance observer does not estimate in prescribed settling time.
Hi @controlEE I admit that I have difficulty understanding the mathematical notations and stability proof associated with the p...
3 months ago | 0
| accepted
Help needed to set proper curve fitting constraints for a comprehensive solution for fitting data to custom models
Hi @sxh The Witch of Agnesi provides a very good fit for the curve, although your original "witch" function needs proper center...
3 months ago | 1
